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| author | Rui Ueyama <ruiu@google.com> | 2019-11-08 14:39:14 +0900 |
|---|---|---|
| committer | Rui Ueyama <ruiu@google.com> | 2019-11-08 19:08:15 +0900 |
| commit | f95273f75aaa5db5493aea7902416ce3d5a09043 (patch) | |
| tree | 13a90d3352b7a7a731a0e6826cf3fe0d04bdadef /lld/ELF/Driver.cpp | |
| parent | 41449c58c58e466bcf9cdc4f7415950382bad8d7 (diff) | |
| download | bcm5719-llvm-f95273f75aaa5db5493aea7902416ce3d5a09043.tar.gz bcm5719-llvm-f95273f75aaa5db5493aea7902416ce3d5a09043.zip | |
Keep symbols passed by -init and -fini
Previously, symbols passed by -init and -fini look as if they are
not referenced by anyone, and the LTO might eliminate them.
This patch fixes the issue.
Fixes a bug reported in https://bugs.llvm.org/show_bug.cgi?id=43927
Differential Revision: https://reviews.llvm.org/D69985
Diffstat (limited to 'lld/ELF/Driver.cpp')
| -rw-r--r-- | lld/ELF/Driver.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/lld/ELF/Driver.cpp b/lld/ELF/Driver.cpp index 1b1a50bf6d1..616a9d4c4e8 100644 --- a/lld/ELF/Driver.cpp +++ b/lld/ELF/Driver.cpp @@ -1782,6 +1782,12 @@ template <class ELFT> void LinkerDriver::link(opt::InputArgList &args) { for (StringRef pat : args::getStrings(args, OPT_undefined_glob)) handleUndefinedGlob(pat); + // Mark -init and -fini symbols so that the LTO doesn't eliminate them. + if (Symbol *sym = symtab->find(config->init)) + sym->isUsedInRegularObj = true; + if (Symbol *sym = symtab->find(config->fini)) + sym->isUsedInRegularObj = true; + // If any of our inputs are bitcode files, the LTO code generator may create // references to certain library functions that might not be explicit in the // bitcode file's symbol table. If any of those library functions are defined |
